Troubleshooting/FAQ (for tomcat - but I guess for all servers) based on recent experience and culling the mailinglist/google: When testing to see if your rcprouter is up Why does: java org.apache.soap.server.ServiceManagerClient \ http://localhost:8080/soap/servlet/rpcrouter \ list Fail with a: Ouch, the call failed: Fault Code = SOAP-ENV:Server.Exception: Fault String = java.lang.NoSuchMethodError While the list.jsp works fine. Answer: (or at least my guess) This error might occurs when the XML parser of Tomcat does not contain a class required by Apache SOAP. A common cause is that there is no JAXP compatible parser at the start of your classpath.